OVERVIEW
• Free Core design
• 0.750" (19mm) O.D. size body
• Stroke lengths from 0.100" to 20.0" (2.5mm to 508mm)
• DC LVDT
• Non-Linearity better than ± 0.25% of FS
• Stainless steel housing rated to IP68
• Chose output: ±10VDC, 0-10VDC, or 4-20mA
• Applications: Laboratory R&D Materials Testing, Valve Position Sensing, Factory Automation
MADE IN THE USA
The HGSI TH-750-D series DC Linear Variable Differential Transformer (LVDT) Position Sensors are used to monitor and track the linear motion or position of a target. These ruggedized sensors are ideal for use in industrial and laboratory applications including automotive R&D, motorsports, industrial, motion control, medical, military and aerospace.
These hermetically sealed sensors are constructed entirely of stainless steel and are resistant to dust, water, and temperature. The coil windings are sealed using an epoxy potting compound providing excellent protection against shock and vibration.
The amplifier electronics are contained within the housing, no need for an external signal conditioner. The ± 10 VDC output is precalibrated at the factory.
Options:
TECHNICAL SPECIFICATIONS
Linearity Error: | ≤ ± 0.15% of FSO typical, ± 0.25% maximum |
Bandwidth: | 125 Hz update rate (analog signal output) |
Resolution: | 16 bit |
Repeatability: | 0.01% of FS |
Hysteresis: | 0.01% of FS |
Operating Temperature: | -20 to +85°C (0 to +185°F) |
Thermal Coefficient: | < -0.025%/°C of FS (< -0.014%/°F of FS) |
Humidity: | 90% RH |
Housing: | Stainless steel |
Mating Connector: | Amphenol PT06A-10-6S(SR) or equivalent |
Life Expectancy: | > 100 million cycles |
Shock Rating: | 1000g, 11 mS |
Vibration Rating:: | 20 g to 2 kHz |
IP Rating: | IEC IP68 |
Country of Manufacture: | Made in USA |
DOCUMENTS & DOWNLOADS
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PRODUCT NUMBERS
Product Overview
The TH-750-D/E/I Series DC LVDT Position Sensors from Harold G. Schaevitz Industries are hermetically sealed, free-core displacement transducers designed for reliable performance in harsh industrial and laboratory environments. With precision DC output, stainless steel construction, and an IP68-rated seal, these sensors provide accurate linear position feedback in the most demanding applications.
Built in the USA and designed for longevity, the TH-750 series offers stroke lengths from 0.100 to 20.0 inches (2.5 mm to 508 mm), making them ideal for motion control, automation, and data acquisition system applications where water and dust resistance, mechanical durability, and ease of integration are essential.
Key Features
Free-core AC LVDT with built-in DC signal conditioning
Available output types:
T-750-D: ±10 VDC
T-750-E: 0–10 VDC
T-750-I: 4–20 mA current loop
Stroke lengths from 0.100" to 20.0" (2.5 mm to 508 mm)
Non-linearity better than ±0.25% of full scale
0.750" (19 mm) O.D. stainless steel housing
IP68 environmental rating – protected against dust and long-term submersion
Epoxy-potted windings for vibration and shock protection
Made in the USA
Built to Perform in Harsh Environments
The TH-750-D/E/I Series is hermetically sealed to an IP68 rating, ensuring maximum protection against water and chemical ingress and particulate contamination. Constructed entirely of stainless steel, the sensor body resists corrosion, temperature extremes, and mechanical stress, making it an ideal choice for outdoor, washdown, or heavy-duty industrial environments.
The coil windings are encapsulated in an epoxy compound to absorb shock and vibration while maintaining long-term signal stability.
Integrated Electronics – Simplified Installation
The TH-750 series integrates the amplifier electronics into the sensor housing. This all-in-one design streamlines installation and wiring while improving noise immunity.
Each model is factory-calibrated for its designated output type, eliminating the need for external adjustments during setup. Choose from:
±10 VDC for high-resolution control and feedback systems
0–10 VDC for compatibility with most industrial controllers
4–20 mA for long-distance current loop applications or electrically noisy environments
Free-Core Flexibility
The free-core design allows the core to move independently within the sensor body, providing mechanical flexibility. This is particularly advantageous while tracking motion from a remote target via a mechanical linkage or core extension rod.
This design eliminates mechanical wear and ensures smooth operation with minimal hysteresis or signal drift, even after millions of cycles.
Applications
Industrial Automation & Factory Equipment
Position feedback in hydraulic or pneumatic cylinders
Valve position sensing in process control systems
Monitoring linear displacement in assembly and robotics
Laboratory & R&D Testing
Displacement measurement in fatigue and materials testing rigs
Motion tracking in automotive, aerospace, or medical device development
Linear sensing in electromechanical test equipment
Harsh and Outdoor Environments
Submersible position sensing for marine or energy applications
Exposure to washdowns or corrosive atmospheres
Mobile or off-highway equipment subject to dust and vibration
Electrical Integration
Compatible with PLCs, industrial controllers, and DAQ systems
Built-in amplifier simplifies system design
Signal types support standard automation protocols
No external signal conditioning required
Why Choose the TH-750-D/E/I Series?
IP68 protection for high-moisture, high-dust environments
Stainless steel construction for corrosion resistance and durability
Integrated DC electronics save space and simplify wiring
Free-core design offers mechanical versatility
Multiple output options for easy system integration
Factory-calibrated output ensures plug-and-play setup
Made in the USA for quality, support, and fast delivery
Need assistance choosing the right model for your application?
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